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Founder MRR Calculator

The Founder MRR Calculator totals monthly recurring revenue from active subscription customers and optional recurring expansion revenue. It can use a simple customer-count and average-revenue model, then subtract recurring monthly discounts or credits to produce net MRR.

Founders can use the result for operating dashboards, board updates, and growth planning when they need a transparent monthly baseline. One-time setup fees, services revenue, annual prepayments recognized all at once, and nonrecurring usage charges should not be included unless they are normalized into a monthly recurring amount.

Monthly recurring revenue inputs

USD
USD
USD
Result
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Net monthly recurring revenue
Base MRR—
Gross recurring revenue—
Annualized run rate—

1. Count active recurring customers
Include customers with an active recurring subscription for the month.

2. Enter average monthly recurring revenue
Use the recurring amount per active customer after normalizing billing periods to one month.

3. Add expansion revenue
Include recurring upgrades or add-ons not already captured in the average amount.

4. Subtract recurring discounts
Enter ongoing credits or discounts that reduce monthly recurring revenue.

5. Review MRR and run rate
Use the main result for net MRR and the details for base MRR and annualized run rate.

Base MRR = Active customers × Average monthly recurring revenue. Net MRR = Base MRR + Expansion revenue − Recurring discounts and credits.

What the result means

Net MRR represents the recurring revenue expected for one month from the current customer base under the entered assumptions.

MRR is an operating metric, not a substitute for revenue recognized under accounting standards.

Given: 180 active customers, $85 average monthly recurring revenue, $1,200 expansion revenue, and $450 recurring discounts.

Calculation: Base MRR = 180 × $85 = $15,300. Net MRR = $15,300 + $1,200 − $450 = $16,050.

Result: Net MRR is $16,050, equivalent to a $192,600 annualized run rate.

Should annual contracts be included in MRR?

Yes, if the recurring contract value is divided by the number of service months. A $12,000 annual subscription would normally contribute $1,000 of MRR.

Do one-time implementation fees count?

No. One-time fees are not recurring and should be tracked separately.

What if customers pay different prices?

Use a weighted average monthly recurring amount, or calculate each plan separately and add the results.

Can MRR be negative?

A healthy recurring revenue balance is generally nonnegative. If discounts exceed recurring revenue, this calculator floors the displayed net MRR at the mathematical result, which may signal inconsistent inputs.

How is MRR different from cash collected?

MRR normalizes recurring service value to a month. Cash collections depend on billing schedules, payment timing, taxes, and overdue invoices.